-a+18=279

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Solution for -a+18=279 equation: 



-a+18=279

We move all terms to the left:

-a+18-(279)=0

We add all the numbers together, and all the variables

-1a-261=0

We move all terms containing a to the left, all other terms to the right

-a=261

a=261/-1

a=-261

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